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Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. The endpoint email/message/tnefAttachmentFromTempFile directly concatenates the user-controlled parameter tmp_file into an exec() call. By injecting shell metacharacters into tmp_file, an authenticated attacker can execute arbitrary system commands on the server. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.

PUBLISHED Reserved 2026-02-02 | Published 2026-02-04 | Updated 2026-02-05 | Assigner GitHub_M




CRITICAL: 9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Problem types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

< 6.8.150
affected

< 25.0.82
affected

< 26.0.5
affected

References

github.com/...office/security/advisories/GHSA-579w-jvg7-frr4 exploit

github.com/...office/security/advisories/GHSA-579w-jvg7-frr4

github.com/...ommit/6c612deca97a6cd2a1bd4feea0ce7e8e9d907792

cve.org (CVE-2026-25512)

nvd.nist.gov (CVE-2026-25512)

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